The song, 'All Day And All Of The Night' by The Kinks, will be available for free download from Hm.com, and will also be on iTunes, raising money for Unicef. For every single downloaded from iTunes, H&M will make a donation to Unicef to enable the purchase of vaccines for children.

"I am so excited to be the face of H&M this autumn," Gisele said. "I love the street-style look, and that we can raise funds for a good cause. I hope everyone downloads my song!"